Leases (Tables)

6 Months Ended

Jun. 30, 2025

Leases [Abstract]

Lease, Cost

The following table presents operating lease right-of-use assets and lease liabilities.

(Dollars in Millions)	Jun 30, 2025		Dec 31, 2024
Operating Lease Right-of-Use Assets	$	43.5	$	33.9
Operating Lease Liabilities	59.5		51.6

Lease expenses are included in Insurance and Other Expenses in the Condensed Consolidated Statements of Income. Additional information regarding the Company’s operating leases is presented below.

	Three Months Ended				Six Months Ended
(Dollars in Millions)	Jun 30, 2025		Jun 30, 2024		Jun 30, 2025		Jun 30, 2024
Lease Cost:
Operating Lease Cost	$	4.0	$	3.8	$	8.0	$	7.7
Variable Lease Cost	1.1		1.2		2.2		2.3
Short-Term Lease Cost1	0.1		0.2		0.2		0.2
Total Lease Cost	$	5.2	$	5.2	$	10.4	$	10.2
1 Leases with an initial term of twelve months or less are not recorded on the Condensed Consolidated Balance Sheets.

Significant judgments and assumptions for determining lease asset and liability at June 30, 2025 and 2024 are presented below.

	Six Months Ended
	Jun 30, 2025		Jun 30, 2024
Weighted-average Remaining Lease Term - Operating Leases	5.4 years		5.4 years
Weighted-average Discount Rate - Operating Leases	4.7	%	4.4	%

Lessee, Operating Lease, Liability, to be Paid, Maturity

Future minimum lease payments under operating leases at June 30, 2025 are presented below.

(Dollars in Millions)	June 30, 2025
Remainder of 2025	$	9.0
2026	14.2
2027	12.4
2028	9.5
2029	7.5
2030 and Thereafter	14.9
Total Future Payments	$	67.5
Less: Discount	8.0
Present Value of Minimum Lease Payments	$	59.5